Home / 579,742.80-870,046.20-299,115.60

Finding the Fourth Proportional to 579,742.80, 870,046.20 and 299,115.60

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Solution

The fourth proportional to 579,742.80, 870,046.20 and 299,115.60 is: 448,896.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,742.80 : 870,046.20 = 299,115.60 : x
  2. Step 2: Convert to fraction form
    579,742.80/870,046.20 = 299,115.60/x
  3. Step 3: Cross multiply
    579,742.80x = 870,046.20 × 299,115.60
  4. Step 4: Simplify right side
    579,742.80x = 260,244,391,140.72
  5. Step 5: Solve for x
    x = 260,244,391,140.72/579,742.80
  6. Step 6: Final answer
    x = 448,896.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.